Hot-water heater.



J. o. oLsoN & c. s. GARLBERG.

HOT WATER HEATER.

AYFLIGATION HLBD 111111118. 1908.

Patented 112111,25, 1913.v

Z SEEETS-SHEBT 1.

J. o. OLSON L C. s. CARLBERG.

HOT WATER HEATER.

APPLICATION FILED MAY 18. 190s.

Patented Ma1225, 1913.

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UNITED STATES PATENT OFFICE.

JOHN O. OLSON, OF ST. PAUL, AND CARL S. CARLBERG, OF MINNEAPOLIS, MINNESOTA,

ASSIGNOR-S TO SPIRAL RADIATOR COMPANY, OF ST. PAUL, MINNESOTA, A CORPO- RATION or ARIZONA.

HOT-WATER HEATER.

To all wlw-m t may concern.'

Be it known that we, JOHN C. OLSON, of St. Paul, Ramsey countyMinnesota, and CARL S. CARLBERG, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in HotlVater Heaters, of which the following is a speciication.

The object of our invention is to provide a portable hot water heater adapted particularly for use in the kitchen, lbath room or laundry for Obtaining a supply of hot water almost instantly upon the admission of water to the heater.

A further object is to provide a heater of very simple construction which can be built and sold at a comparatively low price.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of a heater embodying our invention, the wall of the heater being broken away to illustrate the interior construction. Fig. 2 is a top view of the same. Fig. 3 is a vertical sectional view showing the construction of the heater. Fig. 4 is a horizontal sectional view on the line what of Fig. 3.

In the drawing, 2 represents a spider-like casting forming the base portion of the heater and secured to a double-walled drum 3 having a cone-shaped top portion 4. Chambers 5 and 6 are formed by the double walls of the' drum, separated from one another Iby a Wall 7. Acoil 8 is arranged within the drum in the form of a iiattened tube having its convolutions spaced from one another and connected at its outer end at the bottom to a pipe 9 that extends upwardly through the drum and leads into the chamber 6 within the conical top 4. A draw-off plug 10 communicates with the chamber 5 and has a supply pipe 11 provided with an open end 12 to which a tube (not shown) leading from a sink, laundrytub or bath tub faucet, is attached. The inner end of the coil 8 is connected to an upright pipe 13 at the top which extends through the conical top 4, and has a swiveled horizontal extension 14 through which the hot water is delivered to the sink, tub or other receptacle. The drum is in- Specication Of Letters Patent.

Application filed May 18, 1908.

Patented Mar. 25, 191,3.Y Serial No. 433,337.

closed by a sheet metal jacket 15 spaced from the drum walls and provided in the top with a regulating valve 1G through which the heated air within the drum may ascend.

For the purpose of compelling the water to pass entirely around through the drum 3 we provide a partition 17 therein, the wall 7 being broken at 18, Fig. 1, to form a communicating passage between the chambers 5 and 6, and a partition 19 is provided in the chamber 6 to compel the water to flow entirely around the chamber before entering the eXit pipe 9. In this way the hot water is compelled to flow entirely around the drum after entering through the valve 10 and is then directed upwardly by the inclined partition 17 into the chamber 6, and upon entering the said chamber is diverted by the partition 19 from the eXit opening and is again compelled to flow around the drum. After leaving the chamber 6 and entering the'convolutions of the coil the temperature of the water is rapidly raised, the degree depending of course, upon the intensity of the iiame beneath, until it passes to the discharge pipe 13 in a highly heated condition.

The coil S is preferably made of copper with comparatively thin walls and the water being spread out` over a considerable surface therein, will be very rapidly heated. The number of coils may be varied according to the size of the drum and the capacity desired.

A removable plug 2O is preferably provided in the lower end of the pipe 9 through which access may be had to the pipe for cleansing purposes.

It will be noted that this heater has no valves to be accidentally left closed and cause an explosion. The water must be shut off from the heater at the sink or tub faucet and as long as the faucet is open a supply of water will be delivered at the pipe 14. This pipe is swiveled to allow it to be swung around the heater to deliver the water on different sides thereof and it is considerably larger in cross sectional area than the pipe 13 so that there will be plenty of room for expansion of the hot water as it leaves the heating coil. It is to be noted also that the entrance to the coil is at the bottom of t-lie heater and its discharge opening at the top, thus compelling the water to flow around and around in the coil, ascending therein as it becomes heated. By means of the regulating valve in the top of the inclosing jacket practically all the heat units may be utilized and the highest degree of eiiiciency attained in the operation of the heater.

le claim as our invention:

l. A hot water heater, comprising a jacket or casing having a damper in its upper walls, a double-walled drum having a conical top with an opening therein leading to said damper said drum comprising a heating chamber, a heating coil arranged within said drum and consisting of a flattened tube formed into a series of helical convolutio-ns, a supply pipe leading from said chamber into the lower portion of said tube, the inner convolution of said tube having a discharge passage and a discharge pipe swiveled on said jacket and depending through the opening in said drum andconnected with said discharge passage, substantially as described.

2. A hot water heater, comprising a drum having double walls with a space between them forming a heating chamber, said chamber having a pipe connection in its lower portion -for a water supply, a pipe communicating with the upper portion of said chamber and depending therefrom and having a discharge opening in its lower portion, a coil consisting of a flattened tube having its receiving end connected with the discharge opening of said pipe at the bottom of said coil, said coil having a series of helical convolutions formed therein with spaces between them, a centrally arranged pipe having a closed lower end and an opening in its side wall near the top communicating with the inner end of said coil.I and means connected with the upper end of said pipe and through which the water is discharged from said coil, and the walls of said first-named pipe being imperforate between its discharge opening into said coil and its connection with said chamber, and the walls of said second named pipe being impert'orate below its intake connection with the inner end of said coil whereby the water will be compelled to flow around in said coil and ascend vertically therein, substantially as described.

ln witness whereof, we have hereunto set our hands this 12th day of May 1908.

JOHN O. OLSON. CARL S. OARLBERG.

Witnesses:

RICHARD PAUL, J. A. BYINGTON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

